Printing press



June 28, 1927. R ADAMS PRINTING PRESS Filed Oct. 17. 1923 2 Sheets-Sheet l INVENTOR. Eeeo flams ATTORNEY.

Jun; .28, 1927. R. ADAMS PRINTING PRESS Filed 00:.

17. 1923 2 Shuts-Sheet 2 j tvenior: M Mm MIA. My

UNITED STATES PATENT OFFICE.

REED ADAMS, OF DETROIT, MICHIGAN.

Application filed October 17, 1923.

PRINTING PRESS.

My invention relates to printing andfan object of clean and 'myimprovements V V uniform impress from the type,

is to secure a especially in that class of work in which a part of the type is tion of the press.

changed at each operap I secure this object in the apparatus illustrated in the accompanying which z- Figure 1, 1s press embody ng adetail sectional elevation drawing in side elevation of a printing my invention. Figure 2 is to an enlarged scale of a part of Figure 1.

Figure 3, is a plan view.

of a part of Figure 2..

Figure 1 is a detail plan and tympan thereon.

Figure 5, is a perspective partly in section,

view of the platen view showing a provision for changing a part of the type at each operation of Figure 6, 1s a detai indicated by the the press.

l SGC'UOIIIOII the plane line oo of Figure 5.

a is the frame of the press, carrying the usual conventional parts,

by which the chase b and type If, and the platen with tympan c are carried b, is lock. The platen 0 1S 0 along its upper edge 0 along its lower edge.

(Z is a shaft extending the frame, (Z is a roll the oscillating rocker provided with a roller 1 and with elastic strips top of the letter is alone changed er thereon and (Z? is a pawl adapted to rock about said shaft.

0 is a second shaft bearing in the frame a and extending parallel to the shaft (l. c a

roller on the shaft 6 and e is a ratchet wheel on said shaft secured tosa id roller.

The pawl (Z is adapted of the ratchet wheel and consequently the connecting the rocker to engage the teeth 6 to turn said wheel roller 6 bcl is a rod lock Z) with the pawl (Z to oscillate the latter.

f is a shaft, extending parallel to the shafts (Z and e and having a roller 7 thereon.

(Fig. 3) is a loose pulley on the shaft 7",

held in frictional engagement with the end of the roller F, by a coil spring surrounding said shaft.

cf is a belt passing over a pulley or roller on the shaft 6 and over is a shaft resting in the the pulley 7.

frame a, parallel to the shafts (Z, 0 and 7; g is a roller on the shaft g. p is a roll paper of paper on the roller 9. The

extends in a strand p from the roll 79 over the platen c to an d around the roller 0 from sidcto side of described cillation of the rocker lock Z) actuates the I F pawl (Z which rotates the roller 6 through the ratchet wheel 6 and the rotation of said roller is communicated through the yielding connection above described to the roller f The roller 6 draws the strand 11 along continually, and the paper after leaving the roller 6 is wound into the receiving roll 0 The strand p is held tight by the frictional action of the strips 0 upon the surface of the platen in two superimposed layers which move a short distance inopposite directions at each operation of the press. The outer layer of the strand p on the platen 0, forms the outer surface of the tyinpan and this surface is changed between consecutive actions of the prcss,.so that the opposing surface opposite the type is renewed after each stroke.

In circular letters where the address at the after each impression, the impress of the type in the body of the letter and in the address has presented a different appearance, because the surface of the tympan under the typeforming the body of the letter was altered by the continual action of the same type thereon.

In the above construction, the impress of the whole type is uniform and remains so.

Circular letters are printed in presses of the usual construction as'shown. The body of the letter is on a formthat is retained in the press in-the usual way until the whole number of letters is printed, while a separate address plate which may also have the Salutation thereon, is inserted and removed from the press at each operation. The plates are inserted and removed by hand and the press may be adapted to receive the plate in any well known way. A plate for this purpose is shown in the patent to Joseph Duncan, No. 1,087,223, Feb. 17,1914, and a particular way of securing an address type in place is shown in the patent granted to me, October 15, 1907, No. 868,815.

Figures 5 and 6 illustrate a form and construction shown April 10, 1917 No. 1,221,815, and is shown so that it'lies smoothin a'patent granted to me 'consisting in I was from a type inserted in place at each operation of the press, and providing a new tymedge of said platen,

,see

pan surface at each operation of the press. 2. In combination with a printing press having a platen, a tensioning device at one edge of said platen, "a sheet of suitable material passing through said tensioningdevice, over said platen, and roller and returning over said platen, and means for drawing said sheet of material through said tensioning device and over said platen.

In testimony whereof, I sign this specification; Y v t REED ADAMS.

a roller at the other, 

